[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: Evidence that the W3 is a Shill
- From: Steve Rowe <email@example.com>
- To: Dan Mabbutt <Seigfried@msn.com>
- Date: Tue, 03 Apr 2001 23:06:25 -0400
I don't know of any documentation of the "Full Decimal" IP address.
The Internet Protocol RFC 791  (section 2.3) says:
Addresses are fixed length of four octets (32 bits).
The so-called "Full Decimal" representation is simply the decimal
representation of these 32 bits as a single 32-bit number (rather than
as four separate 8-bit numbers, as in the decimal and octal dotted
The URI Syntax RFC 2396  refers only to dotted quad notation. The
radix of each of the four segments is not discussed, but RFC 2732
(Format for Literal IPv6 Addresses in URL's)  amends RFC 2396's
description of IPv4 addresses to limit the textual representation of
each of the four segments to 3 digits. Although octal (actually, any
radix from 7 through 10) could theoretically serve to represent all 8
bits of a segment in the 3 digits available, the programming
convention of prepending a zero to octal literals would not be
possible. Thus, given the allowable digit range ([0-9] -- radix can
be no more than 10), the overwhelming probability that decimal
notation is supported, and the impossibility of distinguishing decimal
from any other radix (given the 3 digit limitation), it's quite
certain that decimal is the one and only (de jure) standardized radix
for IPv4 address segments in URLs.
Because they are not specified in the URI/URL standard constellation,
alternative IPv4 address notations (such as "Full Decimal" and octal
dotted quad) are potentially not future-proof. "Full Decimal"
notation in particular seems likely to go down in flames once IPv6
addressing becomes universal; what's the likelihood of browser support
for 39-decimal-digit host addresses (IPv6 addresses are 128 bits)?
Retroactive standardization aside (RFC 2732 is quite recent), I
suspect that alternative textual forms for IPv4 addresses have been
standardized de facto by browser makers hoping to gain the
hyper-compatibility high ground, where compatibility is measured as a
minimum of squeaky wheels asking for features (in the dark of the
valley of the shadow of the half-life of Berners-Lee-nium).
 Internet Protocol http://www.ietf.org/rfc/rfc791.txt
 URI Syntax http://www.ietf.org/rfc/rfc2396.txt
 IPv6 Addresses in URLs http://www.ietf.org/rfc/rfc2732.txt
Dan Mabutt wrote:
> Sorry about disrupting an XML list but since were're
> already a little off track ... could you provide a link
> that documents the Full Decimal IP address?
> Steve Rowe wrote:
> > Dan Diebolt wrote:
> > > These ip addresses are all equivalent:
> > >
> > > Octal fieldss : http://00317.00056.00202.00071
> > > Decimal fields : http://18.104.22.168
> > > Full Decimal : http://345931705
> > Full Decimal should be (post-septal-elision-restorification):
> > http://3475931705